The standard Big Bang modet

Q: Calculate the age of the universe if the Hubble constant were 65 km/s/Mpc.

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Q: The cosmic microwave background consists of: huge clouds of dark matter interspersed with equally…

A: Cosmic microwave background also known relic radiation. Cosmic microwave background is kind of…

Q: What is the reason behind the creation of the Large Hadron Collider?

A: Required : What is the reason behind the creation of the Large Hadron Collider?

Q: critical density

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Q: What do you mean by leptons?

A: Leptons are subatomic particles that have half spin. They respond to the gravitational force, weak…

Q: Describe the expanding universe theory (Big Bang Theory) based on observed astronomical evidence…

A: According to the Big Bang Theory, the universe is expanding from the state having high temperature…

Q: Which factor has slowed down the expansion of the universe?

A: The expansion of the universe has slowed down because the object pull each other towards themselves…

Q: How can astronomers view events that happened in the universe’s distant past?

A: We all know that time travel is not possible, so an astronomer can't go into the past using a time…

Q: What would be the Hubble constant if the universe were 18 billion years old?

A: The age of universe is given as, t = 18 billion years (or) t = 18×109 years TO DETERMINE: The…

Q: What are cosmic rays primarily composed of?

A: Cosmic rays are energetic, subatomic particles that arrive from outside the Earth's atmosphere.

Q: Is antimatter, dark matter, dark energy, and degenerate matter all t

A: Antimatter, dark matter ,dark energy and degenerate matter are not all the same thin. Antimatter:…

Q: An 800 nm spectral line when observed from a galaxy is shifted to 920 nm. Calculate the redshift.

A: Redshift is the process by which light from moving sources is shifted to longer wavelengths.…

Q: What was the maximum age of the universe predicted by Hubble's first estimate of the Hubble…

A: Hubble’s time: It is defined as follows, Here H is the Hubble’s constant which has unit km/s/Mpc…

Q: Is there any difference between antimatter, dark-matter, dark energy and degenerate matter?

A: Antimatter: It is like a simple matter. It also reflects the light. For example, positron is the…

Q: Calculate the critical density of our universe.

A: Our universe is expanding and critical density is defined as the average density of matter that is…

Q: why do you have to know the distance to a galaxy to find its mass?

A: The orbital motion of stars explains the masses of galaxies. The stars in a heavier galaxy exhibit…

Q: Briefly explain the degenerate matter.

A: Given:Briefly explain the degenerate matter.Now,Degenerate matter refers to states of matter…

Q: Describe some of the characteristics of the universe that are explained by the standard Big Bang…

A: Given, Big Bang theory of universe

Q: Why primordial black holes are thought to be extinct?

A: Black holes are formed due to the gravitational collapse of massive stars when the fusion inside the…

Q: Calculate the age of the universe for the following Hubble's constant, (b) 65 km/s/Mpc

A: As per Hubble's law, the universe is expanding. If we assume that the expansion's apparent velocity…

Q: How might you relate the big bang to yourself as a physical entity? What elemental parts of your…

A: After Big Bang their is a very fast expansion of universe. In that state the energy and matter is…

Q: Which of these symbols on a Feynman diagram is a gluon?

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Q: Why haven't we detected any Primordial black holes?

A: Primordial black holes or PBH are black holes that formed soon after the birth of the universe. The…

Q: If the value of the Hubble's constant were found to be 60 km/s/Mpc, what would the Hubble time be?

A: The galaxies in our universe are moving away from each other. This was observed by Edwin Hubble. He…

Q: What does the size difference of the irregularities in the background radiation tell us about the…

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Q: What is the most likely range of values for Hubble’s constant? What are the uncertainties in its…

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Q: Why the gravity is not unified with other fundamental interactions

A: Why the gravity is not unified with other fundamental interactions.

Q: Estimate the temperature of the universe when it was approximately 1 minutes old

A: Our universe is thought to be formed from a singularity of infinite density and temperature. It…

Q: What is the estimated age of the Universe (in years) if the Hubble constant is 70 km/s/Mpc?

A:

Q: why are the shells visible around some elliptical galaxies significant?

A: The shell structures in the elliptical galaxies indicates the extremely low surface brightness and…

Q: Which of the following were given as evidence supporting the Big Bang Theory?   The red shift in…

A: The options are:   1. The red shift in star spectra 2. Microwave energy across the universe at…

Q: Why is the cosmic microwave background radiation evidence for a hot Big Bang?

A: The cosmic microwave background radiation (CMBR), is a high wavelength electromagnetic radiation,…

Q: What do the results from the Wilkinson Microwave Anisotropy Probe (WMAP) observations tell…

A: The Wilkinson Microwave Anisotropy Probe, also called Microwave Anisotropy Probe.

Q: Calculate the age of the universe for the following Hubble's constant, (a) 50 km/s/MDC

A: As per Hubble's law, the universe is expanding. The recessional velocity of galaxies is directly…

Q: What has happened to the CMBR since the Big Bang?

A: Before the big bang, the universe's temperature was very high compared to the present scenario.…

Q: About how long after the Big Bang singularity did nuclei such as deuterium and helium-4 form? Group…

A: We know that at the time of the Big Bang, the plasma was so dense and hot that nucleons could not…

Q: Is there other evidence of the Big Bang besides the well-documented red shifts?

A: Introduction: The Big Bang model describes how the universe expanded from an initial state of high…

Q: What is the most fascinating feature of the standard model

A: The Standard Model of particle physics is a hypothesis that classifies all known constituent…

Q: After the Big Bang the Universe expanded and cooled. What was the temperature of the Universe when…

A: All of the universe's matter and energy were once concentrated in a singularity with infinite…

Q: Calculate the time it would take for Messier 87 to completely evaporate.

A: A black hole is a point in space-time where the gravitational force is so large that not even light…

Q: Describe when and where the Big Bang occurred?

A: The Big Bang hypothesis is the most widely accepted cosmological model for describing the origins of…

Q: Give examples of nonbaryonic matter.

A: nonbaryonic matter is the matter found in open space in dark matter. The major classification is…